Coagulum in SBR Latex: Considerations for Carpet Backing Production

Coagulum is an important quality parameter when using SBR latex in carpet backing formulations.

A certain level of coagulum may be present in latex, while higher levels can create practical challenges during handling and production.

Possible Production Issues

Depending on the level and particle size of coagulum, manufacturers may experience:

• Filter blockage
• Pumping difficulties
• Coating defects
• Equipment cleaning
• Production interruptions

What Should Be Checked?

When investigating coagulum, several factors can be reviewed:

SBR Latex

• Coagulum level
• Mechanical stability
• pH
• Storage stability

Storage

• Temperature
• Storage duration
• Tank conditions
• Agitation

Formulation

• Filler
• Thickener
• Defoamer
• Mixing conditions

Production

• Mixing speed
• Pumping
• Filtration
• Coating equipment

The source of coagulum should be evaluated based on the complete process rather than a single parameter.

SBR Latex Supplier Evaluation

For carpet manufacturers, coagulum level can be included in incoming quality control and supplier qualification procedures.

RUICO provides SBR latex for carpet backing applications and can support customers with product data and application testing.